<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FINANCIAL
STATEMENTS FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-START>                             JUL-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                          43,366
<SECURITIES>                                         0
<RECEIVABLES>                                   10,176
<ALLOWANCES>                                       190
<INVENTORY>                                      5,216
<CURRENT-ASSETS>                                60,515
<PP&E>                                           6,633
<DEPRECIATION>                                   4,147
<TOTAL-ASSETS>                                  70,162
<CURRENT-LIABILITIES>                            6,913
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        71,750
<OTHER-SE>                                     (9,020)
<TOTAL-LIABILITY-AND-EQUITY>                    62,730
<SALES>                                         16,362
<TOTAL-REVENUES>                                16,362
<CGS>                                            5,002
<TOTAL-COSTS>                                    5,002
<OTHER-EXPENSES>                                 6,853
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                                  5,002
<INCOME-TAX>                                       996
<INCOME-CONTINUING>                              4,026
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     4,026
<EPS-BASIC>                                        .22
<EPS-DILUTED>                                      .20